+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Double Row Super-Precision Cylindrical Roller Bearings NN 3056 K/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NN 3056 K/SPW33

The NN 3056 K/SPW33 is a double-row cylindrical roller bearing with a 280mm bore and 420mm outer diameter, built from sturdy chrome steel. It handles combined loads up to 243,000 lbf and runs smoothly at speeds up to 2000 RPM.

Its tapered bore design ensures a secure fit, while the open seal allows for easy lubrication with grease or oil. The bearing operates well in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for heavy-duty applications like industrial machinery or large gearboxes where precision and durability are key.

Weighing 49.2kg, it’s robust yet designed for efficient performance. Compliant with RoHS and REACH standards for safe use.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number NN 3056 K/SPW33
  • Size 280 mm x 420 mm x 106 mm
  • Brand TFL
  • Interchangeable brand SKF
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • Bore Type Taper 1:12
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Bore Dia 280 mm
  • Bore Dia Tolerance 0 to +0.035mm
  • Outer Dia 420 mm
  • Outer Dia Tolerance -0.023mm to 0
  • Width 106 mm
  • Width Tolerance -0.35mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 4 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 1.5 mm
  • Permissible Axial Displacement(max.) 5 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 243000 lbf
  • Static Radial Load 468000 lbf
  • Max Speed 2000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 49.2 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 15.3 mm
  • Diameter Lubrication Hole (outer Ring) (K) 7.5 mm
Double Row Super-Precision Cylindrical Roller Bearings NN 3056 K/SPW33 dimension drawing
Download DWG Download PDF

Features

Performance Features of NN 3056 K/SPW33 Bearing

NN 3056 K/SPW33 Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 243,000 lbf, making it suitable for heavy-duty applications.
The double-row design enhances stability and load distribution, ensuring smooth operation.
With a maximum speed of 2,000 rpm, it balances performance and durability.

How Is NN 3056 K/SPW33 Bearing Engineered for Reliability?

NN 3056 K/SPW33 Bearing features a tapered bore design, simplifying installation and alignment.
The open seal type allows for easy lubrication, whether using grease or oil.
Its temperature range of -30° to 110°C ensures reliable performance in varying conditions.
The precision-ground rollers reduce friction, enhancing efficiency and longevity.

Designed for Durability: NN 3056 K/SPW33 Bearing

NN 3056 K/SPW33 Bearing’s robust construction handles both radial and axial loads with ease.
The annular lubrication groove ensures consistent grease distribution, reducing wear.
With a static radial load capacity of 468,000 lbf, it excels in demanding environments.
Its chamfered edges minimise stress concentrations, improving overall durability.

Steel vs Ceramic Bearings: Strengths of NN 3056 K/SPW33 Bearing

NN 3056 K/SPW33 Bearing uses chrome steel for its rollers and rings, providing excellent strength.
This material choice ensures resistance to wear and fatigue in high-load scenarios.
The bearing’s design allows for axial displacement up to 5 mm, accommodating thermal expansion.
Its compatibility with both grease and oil lubrication offers flexibility in maintenance.

Application

Industrial Uses of NN 3056 K/SPW33 Bearing
NN 3056 K/SPW33 Bearing is commonly used in heavy machinery like rolling mills and gearboxes, where its double-row design handles combined radial and axial loads efficiently. The tapered bore ensures a secure fit, reducing slippage during high-speed operations.

What Makes NN 3056 K/SPW33 Bearing a Preferred Choice?
In wind turbines, NN 3056 K/SPW33 Bearing’s high dynamic load capacity makes it ideal for supporting rotor shafts under varying wind conditions. Its open design allows for easy lubrication, extending service life in harsh environments.

Built for Heavy-Duty Use: NN 3056 K/SPW33 Bearing
For mining equipment, NN 3056 K/SPW33 Bearing’s chrome steel construction withstands extreme loads and vibrations. The grease or oil lubrication options provide flexibility for different operational needs.

Automotive vs Aerospace: Applications of NN 3056 K/SPW33 Bearing
In automotive applications, NN 3056 K/SPW33 Bearing is found in large drivetrains, offering stability under heavy loads. For aerospace, its precision and speed tolerance make it suitable for auxiliary power units.

Where Is NN 3056 K/SPW33 Bearing Used?
NN 3056 K/SPW33 Bearing is a reliable choice for paper manufacturing machines, where its high static load capacity supports large rollers. The metric sizing ensures compatibility with European and Asian industrial standards.

Q&A

SEND INQUIRY